0Cr16Ni6 is a precipitated hardening stainless steel with controlled phase transition. After solution treatment, the microstructure is about 40% martensite, 60% austenite and a small amount of δferrite. After cold treatment [TJC STEEL]or cold deformation, the microstructure is basically transformed into martensite.
Equivalent Grades with 0Cr16Ni6:
⑴AMERICA：Croloy 16-6 PH
Chemical Composition(%) for 0Cr16Ni6 Stainless:
C 0.05~0.09 Cr 15.00~17.00 Ti ≤0.05
Si 0.30~0.80 Ni 5.00~7.50 N ≤0.10
Mn 0.30~0.80 P ≤0.030[TJC STEEL] S ≤0.020
Properties for 0Cr16Ni6 Stainless:
Melting Point（℃） 1360~1450
Specific Heat Capacity [J/(kg·℃)] 444
Heat Conductivity [W/(m·℃)] 100℃ 18.0
Coefficient Of Linear Expansion (10-6/℃) 20~100℃ 9.5
20~600℃[TJC STEEL] 13.0
Electrical Resistivity（μΩ·m） 83.7
Heat Treatment System for 0Cr16Ni6 Stainless:
There are two ways of martensite transformation after 0Cr16Ni6 solution treatment: cryogenic (R) treatment and cold (C) treatment. [TJC STEEL]After treatment, the martensite volume in the treated tissue increases to about 90%, and the rest is austenite.
After the whole heat treatment, the hardness of 0Cr16Ni6 at room temperature: 40~48HRC.
Heat Treatment Status for 0Cr16Ni6 Stainless:
⑴RH Condition：Solid Solution Treatment + Cryogenic Treatment + Tempering.
⑵CH Condition：Solution Treatment + Cold Rolling Or Cold Drawing + Tempering.
Heat Treatment Process
⑴ Solid Solution Treatment: Electric Furnace 1000±10℃×30min, < 30℃ Cooling Water;
⑵ Cryogenic Treatment: -70~-80℃×2h;
⑶ Tempering Treatment: [TJC STEEL]420±10℃×1h, Air Cooling.
Reference Hardness for 0Cr16Ni6 Stainless:
Scheme of Heat Treatment HRC
Solid Solution 12~14
Solid Solution+Tempering 20~22
Solid Solution+Subzero Treatment 41~41.5
Solid Solution+Subzero Treatment+Tempering 42.5~43
Performance Characteristics for 0Cr16Ni6 Stainless:
⑴ High strength, low notch sensitivity and insensitivity to hydrogen embrittlement.
⑵ The uniform corrosion resistance of 431 was similar to that of 431;Good stress corrosion resistance;The intergranular corrosion resistance can meet the technical requirements of "L" method when the intergranular [TJC STEEL]corrosion test is carried out according to "Test Method for Intergranular Corrosion Tendency of Stainless and Acid Resistant Steels".
(3) It has stable oxidation resistance in the air medium below 420℃ and in the atmosphere of aviation fuel combustion products.
(4) Thermal processing temperature range: 1100~900℃;The cold working properties of austenitic stainless steels are between that of martensitic stainless steels.
⑸ Good welding performance, [TJC STEEL]parts need to be RH treatment after welding.
Applications for 0Cr16Ni6 Stainless:
0Cr16Ni6 is a kind of martensitic-austenite double-phase stainless steel with high strength, high toughness and good corrosion resistance. [TJC STEEL]It is suitable for making aircraft and engine stress components working below 450℃, as well as other important components working in atmosphere, acetic acid and salt medium.
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